On 24 January 2017 at 02:36, Tom Lane <t...@sss.pgh.pa.us> wrote:

> It might be possible to get away with having only one pg_type column,
> pointing at the parse-analysis function.  That function would generate
> a SubscriptingRef tree node containing the OID of the appropriate
> execution function, which execQual.c could call without ever knowing
> its name explicitly.

Btw, is it acceptable if such generated SubscriptingRef will contain just a
function pointer to the appropriate execution function instead of an OID
like `ExprStateEvalFunc`)? It will help to avoid problems in case of

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